National Science Olympiad Forum By SOF Olympiad Trainer - Page 670

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
4 th blank will be filled with fertilisation correct ans is b Pollen grains are deposited on stigma and not style

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
c maybe????

Ans 2:

Class : Class 3
It should be D

Ans 3:

Class : Class 9
c is the ans

Ans 4:

Class : Class 9
C

Ans 5:

Class : Class 3
c is the correct answer

Ans 6:

Class : Class 3

Ans 7:

Class : Class 9
kunal is wrong

Ans 8:

Class : Class 5
abcd are correct

Ans 9:

Class : Class 7

Ans 10:

Class : Class 3

Ans 11:

Class : Class 3
HE DID NOT EXPLAIN.

Ans 12:

Class : Class 3
NA

Ans 13:

Class : Class 2

Ans 14:

Class : Class 3
ahh... very easy answer is d

Ans 15:

Class : Class 9

Ans 16:

Class : Class 1
D HE GAVE EXPLANATION

Ans 17:

Class : Class 3
D

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
D is correct

Ans 2:

Class : Class 2
Fruits (2) contain minerals and vitamins and are protective food. They help in recovering from illness. Overeating of fried food (1) leads to obesity as it contains fat that gets stored in the body. Chocolates (3) contain a lot of carbohydrates which give us energy when hungry.

Ans 3:

Class : Class 5

Ans 4:

Class : Class 1
d and Gaurika actually chocolate contains fats

Ans 5:

Class : Class 6
D

Ans 6:

Class : Class 9
A

Ans 7:

Class : Class 5
Everyone thinks that a option is correct but it is wrong.The correct answer is d part.Everyone will think that chocolate is junk food.How can it give us the energy but chocolate contains fat.That's why when when we are hungry it gives us a lot of energy

Ans 8:

Class : Class 6
All of these

Ans 9:

Class : Class 3
all of these

Ans 10:

Class : Class 9
D

Ans 11:

Class : Class 8
all of these option(D)

Ans 12:

Class : Class 8
A is not correct D is correct

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
c should be the correct answer

Ans 2:

Class : Class 8
Definitely D

Ans 3:

Class : Class 9
D

Ans 4:

Class : Class 9

Ans 5:

Class : Class 4
Water is also correct

Ans 6:

Class : Class 9
I think D is the correct answer

Ans 7:

Class : Class 7
D, amount of water matters the most out of all.

Ans 8:

Class : Class 8
shape of dish also should be included. Amount of water poured doesnt matter as long as you are collecting equal volume in all dishes. Hence similar dishes is important.

Ans 9:

Class : Class 10
The amount of water also matters right

Ans 10:

Class : Class 8

Ans 11:

Class : Class 7

Ans 12:

Class : Class 8
d is correct answer

Ans 13:

Class : Class 8

Ans 14:

Class : Class 10

Ans 15:

Class : Class 8
D

Ans 16:

Class : Class 5

Ans 17:

Class : Class 7
I feel that it is D

Ans 18:

Class : Class 9
d

Ans 19:

Class : Class 10

Ans 20:

Class : Class 8
Option D is the correct answer

Ans 21:

Class : Class 7
All the given factors are required for a fair test ; So option D would be the correct answer

Ans 22:

Class : Class 6

Ans 23:

Class : Class 7
i think amount of water also nedd

Ans 24:

Class : Class 9
I do agree it's D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
IF WE SHARP A PENCIL IT IS A PHYSICAL IRREVERSIBLE CHANGE .SO,IF WE HEAT A POT IS PHYSICAL IRREVERSIBLE CHANGE. BUT IT COULD HAPPEN THAT THE COMPOSITION OF CLAY MIGHT CHANE BECAUSE OF HEATING AS THE MOLECULES STICK TO EACH OTHER

Ans 2:

Class : Class 6
A is the correct answer

Ans 3:

Class : Class 8
answer is a

Ans 4:

Class : Class 6
The answer is A.

Ans 5:

Class : Class 6
It really should be A

Ans 6:

Class : Class 6
on heating, the clay pot doesn't turn into stone,right?it doesn't change composition once heated , it is still clay ! answer is "A"

Ans 7:

Class : Class 6
C because we can get clay back from a wet pot by smashing it,but once it heats up, it dries the clay and makes it stone hard.

Ans 8:

Class : Class 5

Ans 9:

Class : Class 6

Ans 10:

Class : Class 7
c is the correct answer

Ans 11:

Class : Class 9
C,because- it is a chemical change. after baking we can break it into smaller particles but it won't form the same clay, with same properties again

Ans 12:

Class : Class 7

Ans 13:

Class : Class 6
It should be A

Ans 14:

Class : Class 7
A is correct because it just turns hard but it is still clay only.And also chemical change doesn't mean that it is irreversible,Chemical change means that the identity of the substance we started with is lost.Here the identity is not lost.So A is correct.

Ans 15:

Class : Class 6
Yes ,Because chemical means change in the properties but there is no change .The answer is A

Ans 16:

Class : Class 7
a is the correct answer because chemical composition dose not change

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Please explain it to me.

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7
answer is option c

Ans 4:

Class : Class 9
ans is option C

Ans 5:

Class : Class 7

Ans 6:

Class : Class 8
ans is option C

Ans 7:

Class : Class 8

Ans 8:

Class : Class 9
can someone explain why?

Ans 9:

Class : Class 8
Option D is correct. I dont know why. Please explain

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
jk kj;

Ans 2:

Class : Class 5
Not kerwa its kewra. It is an extract that is distilled from the flower of the Pandanus plant. Kewra water is very similar to rosewater. It is used to flavour South Asian cuisine.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
As it goes up,kinetic energy decreases due to gravity while potential energy increases with height. As it comes down, kinetic energy increases due to gravity while potential energy decreases.

Ans 2:

Class : Class 6
it will be maximum near the ground

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it will be maximum near the ground

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